They were killed after they went to Lviv to try and fight off the Soviet invasion of the territory, that belonged to Poland at the time.

‘The burial is so late, but it's so significant, it's a great message of cooperation between our countries, our people', said Polish Defense Minister Antoni Macierewicz, who attended the ceremony in Ukraine.

The remains of the soldiers were recovered thanks to the efforts of the Freedom and Democracy Foundation (Wolność i Demokracja), which had already helped locate nearly 300 bodies, with 140 of them being exhumed.